One vertex per element, one color per generator, with an edge from x to x·s.
(5,6)(7,8)(9,11)(10,12)(13,14,19,24,18,23,34,39)(15,25,28,40,27,20,35,37)(16,29,30,22,17,31,33,21)(26,41,42,36,32,44,43,38)(1,2)(3,4)(5,7)(6,10)(8,11)(9,12)(13,15)(14,20)(16,26)(17,32)(18,27)(19,28)(21,36)(22,38)(23,25)(24,37)(29,44)(30,42)(31,41)(33,43)(34,35)(39,40) involution — undirected(2,4)(13,16,18,17)(14,21,23,22)(15,26,27,32)(19,33,34,30)(20,36,25,38)(24,31,39,29)(28,43,35,42)(37,41,40,44)(6,11)(7,12)(13,17,18,16)(14,22,23,21)(15,26,27,32)(19,30,34,33)(20,36,25,38)(24,29,39,31)(28,43,35,42)(37,41,40,44)(5,8,9,10)(6,7,11,12)(14,23)(15,27)(21,22)(24,39)(26,32)(28,35)(29,31)(42,43)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.